Ingredients · Church & Dwight
Is Arm & Hammer baking soda gluten-free?
Church & Dwight publishes no gluten statement. The product is 100% sodium bicarbonate, a mineral salt with no grain in it.
- Evidence
- CPublished label or regulation
- Last checked
- 2026-08-23
- Varies by country
- No
Source celiac.org+4 more
Why
This page is filed as unverified for one reason, and it is worth being precise about which reason, because the two things people usually mean by "unverified" are very different. There is nothing suspicious on the label. There is no label to speak of.
What sodium bicarbonate is. NaHCO3. An inorganic salt of sodium, hydrogen, carbon and oxygen, produced either from mined trona ore or by the Solvay process from salt, limestone and ammonia. Neither route passes through a plant, let alone a cereal. Gluten is a protein complex, and a compound with no carbon-based biological origin has no protein of any kind in it. There is no wheat-derived sodium bicarbonate and there could not be one.
What Church & Dwight actually says. Its consumer FAQ states plainly: "Baking Soda is made of 100% Sodium Bicarbonate." That is the whole composition. It is a statement about what is in the box, and it is exactly the sort of statement that makes the chemistry argument above easy to make.
What Church & Dwight does not say. It does not use the word gluten. The Arm & Hammer product pages carry no allergen statement, no gluten-free claim and no certification mark, and they redirect ingredient questions to the Church & Dwight ingredient disclosure portal, which files Arm & Hammer Baking Soda under cleaning products and carries no gluten or allergen information either. We could not locate a published gluten statement from Church & Dwight for this product in any form.
Why that keeps the verdict at unverified. This site's rule is that a manufacturer's silence is not a manufacturer's yes. A composition statement is not a gluten statement, and a gluten-free claim is a legally defined thing: under the FDA rule at 21 CFR 101.91 it means the manufacturer stands behind under 20 ppm, which implicitly covers the packing line as well as the recipe. Church & Dwight has not made that claim, so nobody has taken responsibility for the line. That is the entire gap.
Do not read more into it than that. The gap here is narrower than on almost any other unverified page on this site. There is no ambiguous starch, no undeclared flavouring, no "may contain" statement, no multi-ingredient panel where something could be hiding. There is one inorganic compound made in a chemical plant. If you are looking for a reason to be anxious about the yellow box, there is not one here.
What would move this page to gluten-free. A written statement from Church & Dwight addressing gluten, or a gluten-free claim printed on the carton, or a GFCO mark. Any one of the three would turn this page into a plain yes.
How much risk is this?
Celiac disease: as close to zero as an unverified product gets. Single inorganic compound, no botanical input, no starch carrier, no flour anywhere in the production chain. The only theoretical route is packaging-line cross-contact, and a bicarbonate packing line has no reason to run a wheat product. If you want the question closed rather than merely low, two things take five minutes: call Church & Dwight consumer relations using the number on the carton and ask specifically whether Arm & Hammer Baking Soda is produced and packed on gluten-free lines, or buy a baking soda that carries the claim on the front. The second is easier and costs about the same.
Non-celiac gluten sensitivity: not an issue at any realistic intake.
Wheat allergy: no wheat is involved. The same disclosure gap applies, and the same phone call resolves it.
Cross-contact: this is the only live question, and it is a question about a factory rather than about a formula. It is also the one thing a chemistry argument can never answer, which is why the honest verdict here is unverified rather than yes.
Worth separating out: Arm & Hammer's non-food products (toothpaste, laundry detergent, cat litter, deodorant) sit under the same brand and the same disclosure gap. Toothpaste is the one that matters, because it goes in your mouth. It is a different formulation with a real multi-ingredient panel, and it gets a different answer to this page. Do not carry a conclusion about the baking soda box across to it.
What to have instead
Baking soda is not a product category you need to escape. If you want the document rather than the argument, these are the routes.
- A baking soda sold with a gluten-free labelYesBob's Red Mill sells one, and the point of buying it is not different chemistry, it is that somebody has put their name to the line. Same product, one extra claim.
- Anything carrying a GFCO markIndependently tested to under 20 ppm. For a single-compound mineral this is close to overkill, which is a reasonable thing to want when you are newly diagnosed and reducing the number of decisions in a week.
- Rumford or Clabber Girl gluten-free baking powderYesIf the job you actually need doing is leavening rather than neutralising an acid. Both are corn-starch based and labelled. Note they are not interchangeable with baking soda spoon for spoon: baking powder is roughly three times weaker, and it brings its own acid, so a recipe built around buttermilk or cocoa will taste different.
- Cream of tartar plus bicarbonate of sodaGluten-freeIf you would rather assemble your own leavening and know every component. Two parts cream of tartar to one part bicarbonate, plus one part corn starch if you want to store it.
Nothing needs avoiding. The genuinely useful shopping rule for this aisle is that baking powder is the item that deserves a label check and baking soda is not, because baking powder is a blend and one of its three components is a starch.
Related questions
Is baking soda gluten-free in general? As a substance, yes. Sodium bicarbonate is a mineral salt and there is no grain-derived version of it. Whether a particular brand has documented that is a separate question, and for several major brands the answer is no.
Is bicarbonate of soda the same as baking soda? Yes. Bicarbonate of soda is the British name, baking soda the American one, and both mean sodium bicarbonate. Bicarbonate of soda is not the same as baking powder, which is a blend, or washing soda, which is sodium carbonate and is not food.
Why would a one-ingredient product need a gluten-free label at all? Because the label covers the factory as well as the formula. A gluten-free claim in the US is a promise about the finished product at under 20 ppm, which means the manufacturer has considered shared equipment and shared air. That is the piece "100% sodium bicarbonate" does not address.
Is Arm & Hammer baking soda safe to brush my teeth with on a gluten-free diet? The plain baking soda in the box is the same product discussed above. Arm & Hammer branded toothpaste is a formulated product with a long panel and is a separate question with a separate answer.
Does Church & Dwight publish gluten information for any of its brands? Not in the ingredient disclosure portal, which lists ingredients and their functions for its formulated products without addressing allergens. If you need an answer about a specific product, consumer relations is the route, and asking about one named ingredient gets a better answer than asking "is this gluten-free."
Is baking soda in a recipe enough to worry about at all? A teaspoon of a mineral salt spread across a whole cake would be a negligible exposure even in a worst case that has no plausible mechanism behind it. The flour in that cake is the thing to think about.
How we checked
| Source | Tier |
|---|---|
| Celiac Disease Foundation, Sources of Gluten, baking soda absent from both the gluten-containing and the questionable lists | B |
| Beyond Celiac, Gluten-Free Baking Tips and Tricks, uses baking soda as a leavener within gluten-free baking guidance | B |
| Arm & Hammer FAQ: "Baking Soda is made of 100% Sodium Bicarbonate" | C |
| Arm & Hammer Pure Baking Soda 2 lb box, no allergen statement, no gluten-free claim, ingredients referred to the corporate portal | C |
| Church & Dwight ingredient disclosure portal, covers formulated OTC, cosmetic, pet care and cleaning products; no gluten or allergen information | C |
| Chemistry and production route of sodium bicarbonate (mined trona, or the Solvay process); FDA gluten-free labelling rule, 21 CFR 101.91 | C |
| Church & Dwight, no published gluten statement located for Arm & Hammer Baking Soda | n/a |
Overall source tier: C, verdict unverified. We are publishing this as unresolved on purpose, and we want to be clear about how narrow the gap is. The substance cannot contain gluten. The manufacturer has not said so, has not claimed a gluten-free line, and has not published an allergen position, so nothing here has been verified by anyone with the authority to verify it. If Church & Dwight issues a gluten statement, this page becomes tier A and the verdict becomes a plain yes without a single fact changing.
Last verified: 23 August 2026. Sodium bicarbonate cannot be reformulated. Packaging claims can change, and a claim on the carton in your hand outranks this page.